Improvement in electric gas-lighting apparatus



A. LBOGART.

ELECTRIC GAs LIGHTING APPARATUS. NI.17'1,459.` Patented May1e,1e7e.

i UNITED `r STATES 'FFMC-a ABRAHAM L. BoeA-Rr, or New YonK, n. Y.

lMBRQiEMENl-T AlN, El-.ECTRlQ GAST-LIGHTlN-G APPARATUS- v Speciiiqatipn forming partgof Letters Patent No. 177,415.9, dated May 16, 1876; application tiled March 20,187.6.

Teelt wltma it, may cantera:

Be. it; known that I, ABRAHAM L. BOGART, of Newv York` city, in the, county of N ew York, and in the State of lNew York, have invented cer-:tain new and useful Improvements in Apparatus; for Light-ing- Gas byElectricity 5l and do,4 hereby declare that the,` following is a full, clear, and exact description thereof, reference being had: tothe accompanying drawings, making a; part otthis specification, iu which- Eigurel isa; perspective view of myimprovedv mechanism as applied to a gas-burner, the tap heilig-closed.4 Fig.,2 isa sideelevation of the same,r with saidtap. open. Fig. 3 is a perspec tive of the parts of said burner and vmechane ism Separated from each other; and Fig. 4 is afvertieal central section of the tube, showing the means employed for insulating the burner from the tube.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to increase the eflicien cy and durability ofmechanism employed for igniting gas by means of electricity; "and it consists, principally, in the peculiar construction of the mechanism employed for operating the vibrating arm, by means of which said arm may be brought into or released from contact with the iixed arml at will, so as to close or open the electric circuit, substantially as is herein after specified. It consists, further,

i-n the means employed for strengthening the insulating-section, substantially as and for the purpose hereinafter shown. It consists, finally, in the construction of the fixed arm and its combination with the burner, substantially as and for the purpose hereinafter 'set forth.

In the annexed drawings, A represents the lower section of my burner, which has a general cylindrical iorm, and at its upper and lower ends is threaded interiorly, as seen in Fig. 4. rIhe upper section B has any. usual form atits upper end, whileits lower end is threadedinteriorly, to correspond with the upper end of the section A, and said sections are connected together by means of a plug, (l, that is i constructed V,from ivory, rubber, or other substance which is a non-conductor of electricity, and has its ends reduced in diameter, and threaded exteriorly, to enable them t0 tit into the ends of said sections. A centraiY longitudinal opening, c, is provided in and through the plug or insulator O for the passage of gas, which opening is, preferably, Y

lined with metal c', as seen in Fig. 4. Between the lower end of Vthe upper section B and the insulator (lis placed a collar, D, from one .edge of which extends upward an arm, d, that,

near its upper end, curves outward, upward, and thenr horizontally inward, and terminates in-a point, d', (preferably platinum,) which occupies near theV oriee b ofsaid` section B, and in exact range with the gas when the latter is permitted tofescape therefrom. P-ivoted upon` .one side, at the upper end of the section A, isV a bar, E, which has the form shown in Fig. 2,l

and at its upper end is the counterpart of the arm d', and terminates in a platinum point, e, i

scribed means: The lower end of the bar or vibrating arm-E extends downward upon one side of the plug G of the-stopcock H, and terminates at a point upon a line with the upper side of said plug. Pivoted or hinged upon the upper side of the plug G (when closed) is a lever, I, which, in side elevation, has the form of4 a right angle, as shown in Fig. 2. 'The horizontal portion of the lever I has such dimensions as to enable it to be pressed by the thumb of the operator as he grasps the end g of the plug Gr, while the vertical portion of said lever has the form, in front elevation, of a section of a circle, of which the axis of said plug is the center.

The lever I is capable of oscillation upon its pivotal bearing; but such motion is limited in one direction by the contact of its horizontal portion with the end of the plug G, and in an opposite direction by the contact of its vertical portion with an inclined shoulder, g,`

formed upon said plug in rear of-sa-id lever. The lower end of the vibrating arm E bears vagainst the outer face of the vertical portion point d of the fixed arm d. Gircnmfercntially the vertical or cam portion ot' the lever I has such shape as to prevent it from moving the vibrating arm sufficiently to cause its point to' impinge upon the point of the fixed arm when the plug is closed; but as the latter is turned to permit gas to ow, the shape of said cam portion changes, so that at any time thereafter said points maybe brought into contact by the depression of the outer horizontal portion of said lever. Upon releasing the lever from pressure the spring F will cause the same and the arm E to return to their normal positions. If, now, one Wire ot' an electric battery is connected to or with the fixed arm D, the effect of contact between the points d and e will be to close the vcircuit and cause a ow of electricity, while by the separation of said points the circuitwill be broken and a spark produced. rjlhis result may be produced by causing the operator to grasp the lever and plug at the same instant, and release the former when said plug is fully turned; or the latter may first be adjusted and said lever afterward manipulated, so as to produce a spark. If, from any cause,

the first spark fails to ignite the gas, any desired number of sparks may be produced Without change of adjustment of the plug; but While such is true, it is impossible that the circuit should remain closed, so as to waste the electric duid, except when the operatinglever is held in a depressed position by the operative.

Having thus fully set forth the nature and merits of my invention, what I claim as new 1s- 1. Iri combination with the vibrating arm E,

the means employed for moving the same so as to cause its point e to impinge upon the point d of the stationary insulated arm d, consisting of the pivoted cam-lever I, arranged with its vertical portion in engagement with the lower end of said arm, substantially as and for the purpose specified.

2. In combination with the opening c of the l insulator C, constructed of or from ivory, rubber, or other like material, the metal pipe or tube c', fitted into and forming a lining for contiguous ends of the burner-section B and the insulator-section C, and operates to secure v said arm in position with relation to said burner, substantiallyT as and for the purpose specified.

In testimony that I claim the foregoing I i have hereunto set my hand this 11th day of March, 1876.

ABRAHAM L. BOGART.

Witnesses:

MORTIMER I. ENNIs, WM. H. RIBLET. 

